JP2005247351A - Bag having filtering function, and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag having a filtering function which is maintained in a compact configuration during the distribution. <P>SOLUTION: In the bag 1 having the filtering function, at least a part thereof is formed of a sheet S with water-permeable/air-permeable property, and an expandable opening part is formed therein. A strip-like gather part 21 consisting of a first gather part 21a and a second gather part 21b is provided on the opening part. An expandable member 22 is provided on the gather parts 21a and 21b along the longitudinal direction. During the distribution and storage, the sheet S is folded between the gather parts 21a and 21b. When in use, the sheet S is pulled out between the gather parts 21a and 21b in an expanded manner. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a draining bag in the water around a general household and a bag having a filter function used as a hood for a ventilation fan / fan.

Japanese Patent Laid-Open No. 2002-220101

  A bag having a filter function, which is formed using a sheet having a water permeability and a breathability such as a non-woven fabric and capable of selecting and capturing a solid material having a predetermined size corresponding to a cloth or a mesh. It is widely used as a draining bag in the water around ordinary households and as a hood for ventilation fans and fans.

  As an example of the bag having the filter function, there is a draining bag according to the invention described in Patent Document 1 by the present applicant. This is a bag formed by adhering the sides of the sheet on a flat surface with a small hole for drainage, and when contents such as garbage containing moisture are put into the bag, Water is discharged from the small holes, while solids larger than the small holes remain in the bag, thereby allowing the contents to drain.

  However, the above-mentioned conventional draining bags are distributed in a state where several tens of sheets are wrapped and packaged, but at the time of this packaging, the unfolded bags are folded into two or four. Therefore, it was difficult to say that the form at the time of distribution was compact.

This invention makes it a subject to provide the bag which has a filter function which can be made into a compact form at the time of distribution, and its manufacturing method in view of this.
It is another object of the present invention to provide a bag having a filter function that can be easily expanded from a folded state and a method for manufacturing the bag.

  In order to solve the above problem, the invention according to claim 1 of the present application is formed of at least a part of the sheet S having water permeability and air permeability, and includes an opening 2 having stretchability. In the bag 1 having the filter function, a band-shaped gather portion 21 is provided over the entire circumference of the opening 2, and the gather portion 21 includes a first gather portion 21 a and a second gather portion 21 b that are opposed to each other. The two end portions 21c and 21c of both gather portions 21a and 21b are connected to each other, and the above-mentioned gather portions 21a and 21b are provided with elastic members 22 along the longitudinal direction. At the time of storage, the sheet S is folded between the two gathered portions 21a and 21b, and at the time of use, the sheet S is inserted between the two gathered portions 21a and 21b. Issued can provide a bag having a filter function, characterized in that it is a spread morphology.

  In the invention according to claim 2 of the present application, the sheet S folded between the two gather portions 21a and 21b is overlapped and folded back into a wave shape. The bag having the filter function according to claim 1, wherein the bag is maintained by the member 22.

  Further, in the invention according to claim 3 of the present application, the short dimension of the sheet S in the state of being folded between the two gather portions 21a and 21b is larger than the short dimension of both the gather portions 21a and 21b. A bag having a filter function according to claim 1 or 2, characterized by being equal or smaller.

  Further, in the invention according to claim 4 of the present application, at least a part has water permeability and air permeability, and a rectangular sheet S capable of selecting and capturing a solid material having a predetermined size is provided on one side. By alternately folding back along the side S1, a continuous elongated folded piece S2 is formed and folded, and the front side folded piece S2 and the back side of the folded sheet S are as described above. The folding member 22 is attached so as to be along the longitudinal direction of the folding piece S2, so that the gathered portions 21a and 21b are formed, and the folded state is folded at a predetermined interval in the longitudinal direction. There is provided a method for producing a bag having a filter function, characterized in that the tatami pieces S2 have a step of bonding in the thickness direction.

In carrying out the present invention, since the sheet S is folded between the gather portions 21a and 21b during distribution and storage, it is advantageous to have a compact form and not to take up space.
In addition, since it can be easily expanded from the folded state, it is ideal as a draining bag in the water around general households, such as triangular corner C, sink drainage and bathroom drainage, and as a hood for ventilation fans and fans. It is.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state in which the bag according to this example is folded, and FIG. 2 is a perspective view showing a state in which the bag according to this example is unfolded. FIG. 3 is a perspective view showing an example of use of the bag according to this example, and FIG. 4 is an explanatory view showing a method for manufacturing the bag according to this example.

The bag 1 according to the present invention is formed of a sheet S having at least part of water permeability and air permeability. In this example, a nonwoven fabric is used as the material of the sheet S, and the entire bag 1 has water permeability and air permeability.
Here, as the material of this nonwoven fabric, the following materials can be exemplified as those mainly composed of chemical fibers.
1) Composite material of polypropylene and polyester 2) Composite material of polyethylene and polyester 3) Composite material of polyethylene and PET 4) Composite material of vinylon and polyester 5) Single-piece material of polypropylene The following materials can be exemplified.
1) Composite material of kenaf, wood pulp, and chemical fiber 2) Composite material of natural pulp and PET The materials listed above are only examples, and the material of the nonwoven fabric of the sheet S is not limited to this, Various things can be used. In addition to non-woven fabrics, a sheet having a large number of small holes in a sheet that does not have water permeability and breathability, or a net-like sheet is used, and a solid material having a predetermined size corresponding to the small holes and meshes is used. It can be selected and captured, and various sheets can be used.

By folding and adhering the sheet S, a bar-like form in which the sheet S is folded is formed as shown in FIG. Then, when the sheet S is spread from the rod-like material by pulling the folded pieces S2 in a folded state, which will be described later, away from each other, that is, in the vertical direction T shown in the drawing, a bag-like form as shown in FIG. It becomes.
The bag 1 in the unfolded state is provided with an opening 2 and a belt-like gather part 21 having elasticity is provided over the entire circumference of the opening 2 so that the opening 2 has elasticity. As shown in FIG. 3, the bag 1 can be attached by hooking the opening 2 to an attachment object such as a triangular corner C. A specific method for manufacturing the bag 1 will be described in detail later.

The gather part 21 in this example is composed of a first gather part 21a and a second gather part 21b facing each other so as to surround the opening 2, and both end parts 21c and 21c of both gather parts 21a and 21b are bonded and connected. It is circular. As in this example, the first gather portion 21a and the second gather portion 21b may be formed by connecting separate band-shaped portions, or the first gather portion 21a and the second gather portion 21b are initially It is also possible to use an annular one that is integral with each other.
In addition, the gather part 21 may be formed integrally with the sheet S constituting the bag 1 or may be formed separately. Incidentally, in this example, they are integrally formed.

As shown in FIG. 1, the elastic members 22 are attached to both the gather portions 21a and 21b along the longitudinal direction.
When the bag 1 is distributed or stored, the sheet S is overlapped between the gather portions 21a and 21b, folded back in a wave shape, and folded. On the other hand, when the bag 1 is used, the sheet S is pulled out from between the gather portions 21a and 21b and spreads as shown in FIG. And, as shown in FIG. 3, the bag 1 spread in this way is attached to the triangular corner C by hooking the gather portion 21, or attached to the drain outlet of the sink or the drain outlet of the bathroom, etc. It can be used as a draining bag around the water in general households. In addition, although not shown, it can also be used as a hood to prevent dust or the like carried by the airflow from adhering to the blades and the like by covering the ventilation fan / fan.

Next, the manufacturing method of the bag 1 having a filter function in this example will be described.
The material of the sheet S used for the bag 1 is a non-woven fabric as described above, and the unfolded shape has a long side S1 having a side length L1 and a side length L2, as shown in FIG. It is a rectangle having a short side S3. Note that the shape of the sheet S used in the present invention is not limited to a rectangle as in this example, but is preferably a rectangle or a square in order to be elongated and orderly folded as will be described later.

  In addition, the opening part 2 of the bag 1 can be enlarged by forming the side length L1 of the long side S1 in the sheet S in the spread state large. Moreover, the depth of the bag 1 can be increased by forming the side length L2 of the short side S3 large. In addition, the size or the number of folding of the folding piece S2 can be adjusted by increasing or decreasing the following folding piece dimension L3. Therefore, by adjusting each of these dimensions L1 to L3, in order to make the rod-like form in which the sheet S is folded into a desired form according to the form of the attachment object such as the triangular corner C, variously. It can be changed.

  As shown by the horizontal two-dot chain line in FIG. 4 (A), this rectangular sheet S is alternately fold and valley with a predetermined interval (folded piece dimension) L3 in the direction along the long side S1. By being folded and folded, as shown in FIG. 4B, a long and narrow folding piece S2 continuous in the short side direction is formed and folded into a long and narrow bar shape. In addition, the front-side folding piece S2 and the back-side folding piece S2 in the folded state in this way are attached to the elastic member 22 as described later, whereby the first gather portion (front side) 21a. And the second gathered portion (back side) 21b.

  Next, the sheet S in the folded state as described above is integrated with the folded pieces S2 in the folded state at both end portions 21c and 21c at a predetermined interval in the longitudinal direction. By bonding in the thickness direction, as shown in FIG. In this example, this adhesion is made by heat sealing.

And as shown in FIG.4 (C), it expands / contracts along the longitudinal direction to the center position 21d in the folded piece S2 on the front surface side and the folded piece S2 on the back surface side in the sheet S in a grouped state. The member 22 is bonded by heat sealing to form the first gather portion 21a and the second gather portion 21b.
As shown in FIG. 4C, the relationship between the folding piece S2 and the stretchable member 22 at this time is an exposure coordinated on the front side and the back side in the folded state of the folding piece S2. The elastic member 22 may be arranged on the surface of the folding piece S2a, or as shown in FIG. 5, the inner folding piece S2b and the exposed folding piece S2a arranged inside in the folded state. You may coordinate so that the expansion-contraction member 22 may be inserted | pinched between them. The folding piece S and the elastic member 22 may be bonded together or intermittently.

  Rubber is the most common material for the elastic member 22, but the present invention is not limited to this, and various elastic materials can be used. Further, the form of the elastic member 22 is not limited to the thread-like one as in this example, but may be a belt-like one, or a plurality of thread-like ones may be arranged on the sheet S in parallel. It is possible to implement in the form.

Since the elastic member 22 is attached in this manner, the sheet S in the folded state as described above is compressed in the longitudinal direction because the elastic member 22 contracts. Thereby, it will be in the form by which the folded piece S2 piled up was folded in the shape of a wave.
However, since the exposed folded piece S2a and the elastic member 22 are bonded as described above, the portion of the exposed folded piece S2a bonded to the elastic member 22 is expanded and contracted as shown in FIG. A straight line is formed along the member 22.
Then, as shown in FIG. 6, the folded piece S2 is folded back into a wave shape and the folded shape is fixed by the urging of the elastic member 22 until the sheet S is artificially pulled out into a bag shape. Is maintained.
In this example, the short dimension of the folded piece S2 in the state of being folded between the two gather parts 21a and 21b is equal to or smaller than the short dimension of both the gather parts 21a and 21b. Therefore, the sheets S can be compactly arranged in accordance with the widths of the two gather portions 21a and 21b.

In addition, said manufacturing method shows an example, Comprising: It is not limited to the thing of this example, The change of the order in the middle of manufacture and the change in order is possible.
For example, a long sheet S as shown in FIG. 7A is used, and a long elastic member 22 is attached in the longitudinal direction as shown in FIG. 7C, as shown in FIG. 7C, the portions corresponding to both ends 21c, 21c in the longitudinal direction of the gather portion 21 are formed by heat sealing while being long, and then cut individually, 1 may be adopted.

The bag 1 having a filter function according to the present invention is a bag having a function as a filter capable of selecting and capturing a solid matter of a predetermined size in addition to the draining bag and the hood for a ventilation fan / fan described above. Can be used widely.

It is a perspective view which shows the state which folded the bag of this example. It is a perspective view which shows the state which unfolded the bag of this example. It is a perspective view which shows an example of use of the bag of this example. It is explanatory drawing which shows an example of the manufacturing method of the bag of this example. It is explanatory drawing which shows the relationship between a folding piece and an expansion-contraction member. It is a side view which shows the state which folded the bag of this example. It is explanatory drawing which shows another example of the manufacturing method of the bag of this example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag (having a filter function) 2 Opening part 21 Gather part 21a 1st gather part 21b 2nd gather part 21c Both ends of gather part 22 Elastic member, rubber S sheet S1 One side of sheet, long side S2 Fold of sheet Tatami piece

Claims (4)

At least a part having water permeability / breathability is formed by a sheet (S) capable of selecting and capturing a solid material of a predetermined size, and having an opening (2 In the bag (1) having a filter function with
A band-shaped gather part (21) is provided over the entire circumference of the opening (2),
This gather part (21) is composed of a first gather part (21a) and a second gather part (21b) facing each other, and both end parts (21c, 21c) of both gather parts (21a, 21b) are connected to each other. And
Both the gather parts (21a, 21b) are provided with elastic members (22) along the longitudinal direction.
In distribution and storage, the sheet (S) is folded between both gather portions (21a, 21b).
In use, the bag having a filter function, wherein the sheet (S) is pulled out from between the two gather portions (21a, 21b) and spreads.   The sheet (S) folded between the two gather parts (21a, 21b) is overlapped and folded back into a wave shape, and this form is maintained by the stretchable member (22). The bag having a filter function according to claim 1.   Compared to the short dimension of both gather parts (21a, 21b), the short dimension of the sheet (S) in a state of being folded between both gather parts (21a, 21b) is equal or smaller. The bag which has a filter function of Claim 1 or 2. A rectangular sheet (S) that is at least partially water-permeable and breathable and that can select and capture solids of a predetermined size is alternately folded along one side (S1). A continuous elongated folding piece (S2) is formed and folded;
In the sheet (S) folded as described above, the stretchable member (22) is attached so as to be along the longitudinal direction of the front-side folded piece (S2) and the back-side folded piece (S2). The process of forming gather parts (21a, 21b) by
A bag having a filter function, comprising a step of bonding the folded pieces (S2) in a folded state so as to be integrated in the thickness direction at a predetermined interval in the longitudinal direction. Manufacturing method.

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